Sustainability isn't an option; it's a responsibility we owe to future generations.

我们的科学力量已经超过了我们的精神力量。我们有导弹，但我们的人类道德方向已经偏离。

Life is too short to be living somebody else's dream.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.